Cover blurb:Bratheen Traloor, reclusive billionaire, has lived alone for over twenty years on the planet Rhinvil. Now he has broken his isolation, inviting Bernice Summerfield to examine a mysterious artifact unearthed during building work at his sprawling mansion.

Accompanying Benny is Adrian Wall, the construction manager responsible for overseeing the work, but his construction crew has vanished, and soon Benny and Adrian discover that Traloor is not as alone as he might think.